1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /** 26 * @test 27 * @bug 8031320 28 * @summary Verify that rtm locking is used for inflated locks. 29 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary 30 * @build TestUseRTMForInflatedLocks 31 * @run main/othervm/bootclasspath -XX:+UnlockDiagnosticVMOptions 32 * -XX:+WhiteBoxAPI TestUseRTMForInflatedLocks 33 */ 34 35 import java.util.List; 36 37 import com.oracle.java.testlibrary.*; 38 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; 39 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; 40 import rtm.*; 41 import rtm.predicate.SupportedCPU; 42 import rtm.predicate.SupportedVM; 43 44 /** 45 * Test verifies that RTM-based lock elision could be used for inflated locks 46 * by calling compiled method that use RTM-based lock elision and using 47 * manually inflated lock. 48 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times, 49 * so total locks count should be the same. 50 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0 51 * is used. For more information abort that issue see 52 * {@link TestUseRTMAfterLockInflation}. 53 */ 54 public class TestUseRTMForInflatedLocks extends CommandLineOptionTest { 55 private TestUseRTMForInflatedLocks() { 56 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 57 } 58 59 @Override 60 protected void runTestCases() throws Throwable { 61 AbortProvoker provoker = AbortType.XABORT.provoker(); 62 RTMLockingStatistics lock; 63 64 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 65 provoker, 66 "-XX:-UseRTMForStackLocks", 67 "-XX:RTMTotalCountIncrRate=1", 68 "-XX:RTMRetryCount=0", 69 "-XX:+PrintPreciseRTMLockingStatistics", 70 AbortProvoker.class.getName(), 71 AbortType.XABORT.toString()); 72 73 outputAnalyzer.shouldHaveExitValue(0); 74 75 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 76 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 77 78 Asserts.assertEQ(statistics.size(), 1, 79 "VM output should contain exactly one rtm locking statistics " 80 + "entry for method " + provoker.getMethodWithLockName()); 81 82 lock = statistics.get(0); 83 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 84 "Total lock count should be greater or equal to " 85 + AbortProvoker.DEFAULT_ITERATIONS); 86 } 87 88 public static void main(String args[]) throws Throwable { 89 new TestUseRTMForInflatedLocks().test(); 90 } 91 }